Chair, bed, couch, or the like for use in surgical operations or examinations.



PATENTED MAY 23, 1905,

P. A. GAYON. Y CHAIR, BED, OOUOH, OR THE LIKE FOR USE IN SURGICAL OPERATIONS OR EXAMINATIONS.

APPLICATION, IILED SEPT.18, 1899.

2 SHEETS-SHEET 1 No. 790,726. PATENT-ED MAY 23, 1905.

' P. A. GAYON. CHAIR, BED, COUCH, OR THE LIKE FOR USE IN SURGICAL OPERATIONS OR EXAMINATIONS.

APPLICATION FILED SEPT. 18, 1899.

2 SHEETS-SHEET 2.

UNITED STATES I Patented May 23, 1905:

PATENT OFFICE.

PIERRE ALBERT GAYON, OF PARIS, FRANCE.

CHAIR, BED, COUCH, OR THE LIKE FOR USE IN SURGICAL OPERATIONS OR EXAMINATIONS.

SPECIFICATION forming part of Letters Patent No. 790,726, dated May 23, 1905.

Application filed September 18, 1899. Serial N0. 730,897-

1'0 aZZ whom it may concern:

Be it known that I, PIERRE ALBERT GAYoN, a citizen of the Republic of France, residing at Paris, France, have invented certain new and useful Improvements in Chairs, Beds, Couches, or the Like for Use in Surgical Operations, of which the following is a full, clear, and exact description.

My invention has relation to chairs, couches, beds, or the like articles of furniture; and among the objects in view is to provide a chair adapted for ready adjustment into various positions; and the invention consists in the novel construction, arrangement, and combination of parts, as hereinafter fully described, illustrated in the drawings, and pointed out in the appended claims.

In the drawings, Figure 1 is a side elevation, partly broken away, of a chair embodying my invention. Fig. 2 is a sectional plan view, partly broken'away. Figs. 3 and 4 are sections of Fig. 2 on lines C D and A B, respectively.

Referring particularly to Figs. 1 to 4, inclusive, a indicates a metallic frame mounted upon suitable legs. Arranged transversely of the chair and at the sides thereof and mounted in suitable transverse bars, as seen in Fig. 2,

are two screw-shafts g, which at their ends are provided with worm-pinions f. The latter, and consequently the screw-shafts, are adapted to be simultaneously rotated by any suitable mechanism. Extending crosswise between the shafts g and havingthreaded apertures at the ends, within which work the said shafts g, is a bar Z, so that when the shafts are rotated said bar will be caused to travel horizontally toward or from the front of the chair. The bar I) is connected by two dependinglinks c to uprights d, which extend from a point beneath the seat upward and have a pivotal connection at 0 with the frame a and extending thence upwardly and connected with the back-piece of the chair. Owing to the arrangement of the parts, when the bar 5 is moved toward the front of the chair the backpiece will be caused to be tilted rearwardly and assume asubstantially horizontal position, to thus transform the device into a couch.

14 indicates a section arranged at the front end of the chair. Normally this section hangs vertically, as seen in Fig. 1, when the device is being used as a chair.

Beneath the chair-seat on each side is ahorizontal rod 11, which is adapted to be locked to the bar Z by a suitable locking device, so that said rods t' will be caused to move simultaneously with the bar Z) when the latter is moved as before described. A suitable locking device for the purpose comprises a lever h, carried by the bar and adapted to engage a recess in one of the rods The forward ends of the rods z' lie against (or substantially. so) the under side of the section Z4 when the latter is hanging vertically. Now when the rods 2' move forwardly the section 75 will be gradually raised into a nearly horizontal position.

0 0 are links jointed together and to the section is and the sliding frame p. When the section is raised, saidlinks spread out, as will be understood.

Zrepresents links jointed together and to links 0 and having a pivotal connection with the bar 5 through the medium of an arm of the lever c, to which arm one end of bar 1 is attached, and when the bar is in the position seen in Fig. 1 said links Z serve to hold the section in the depending position seen in said figure. When the bar 6 moves forwardly, the links Z will serve to operate the links 0 0 to cause the latter to assist in moving the section Z; to a horizontal position.

0 is a link pivoted to frame a, and the end of the link 0 not connected to the link 0 is pivoted to frame It The outward movement of bar 5 pushes the links H forward, swinging link 0 upward and raising frame It by means of link 0'. The pin 0 on link 0 sliding in the slot 0 in link 0*, abuts against the upper end of the slot when bar 6 is in its foremost position and section k raised fully into horizontal position, and thus limits further movement of the parts.

The seat'of the chair is not connected rigidly with frame a, the frame 19 of said seat being pivoted at its ends to the rods m m, the other ends of which are adapted to be bolted or pivoted to the pieces (Z and 0. By raising the rods m m by means of pieces d and 0 the seat may be elevated or tilted with respect to frame (4. Thus by engaging the bolts It so as to bolt or pivot the rods m to pieces d the forward displacement of rod Z) causes the front end of the seat to rise, and at the same time the back is slightly moved backward, while suitably-arranged pins at the lower ends of the rods m are arranged to be caught by the hooks n, and said rods m are thus prevented from moving upward, thus maintaining the back of the seat rigidly in position and causing the other end to rise, so as to form a sloping seat. By engaging the bolts h It, so as to pivotally connect the rods m m with pieces d and c and enable the pins on rods m to clear the hooks n, the forward displacement of bar 6 will cause the seat to be raised to its full extent by rods m m and the back to be lowered to the level of the seat.

m represents bars pivoted at one end to the seat p and at the other to the uprights d. A lever h is arranged to lock the bars m rigidly to the uprights .cl, so that when so locked and the bar 6 is moved forwardly the front end of the seat will be tilted upwardly. Bars m are pivoted at their upper ends to the framep and have their lower ends pivoted to the lower ends of bars 0, which latter are pivoted at their upper ends to the bar 6, and by locking the bars m and 0 at the point where they are pivoted together by means of a locking-lever it, provided for the purpose, the seat will be raised to the full extent permitted by the bars m. A bar 12 having a slot-and-pin connection with the rear legs of the chair, is adapted to have the forward hook end hooked over pins on the lower ends of the bars on, and thus maintain the rear end of the seat in position.

1 indicates a step which may be used for mounting into the chair.

What I claim is 1. In a device of the character described, the combination with the main frame,of screwshafts arranged transversely thereof on opposite sides, a bar cooperating with the screwshafts adapted to be moved thereby, a back section adapted to be tilted, uprights d, and links connecting the bar with said uprights, said uprights havinga pivotal connection with the frame and connected with the back-piece.

2. In a device of the character described, the combination with the main frame, of screwshafts arranged transversely thereof on opposite sides, a bar cooperating with said screwshafts and adapted to be moved thereby, a seat-frame, and a back piece adapted to be tilted, the sliding frame p, uprights d, links connecting the bar with said uprights, the latter having pivotal connection with the frame and connected with the back-piece, bars m pivotally connected to the uprights d and the seat-frame and means for locking the bars m and the uprights together, for the purpose specified.

In testimony that I claim the foregoing I have hereunto set my hand this 4th day of September, 1899.

PIERRE ALBERT GAYQN.

Witnesses:

PHILIPPE LEROUX, EDWARD P. MAOLEAN. 

